chanelink logo
CHANELINK
English

Scientists build high-power cladding-pumped Raman fiber laser in 1.2 μm band

1189
2024-01-31 13:58:14
See translation

Laser sources operating in the 1.2 μm band have some unique applications in photodynamic therapy, biomedical diagnostics, and oxygen sensing. In addition, they can be used as pump sources for mid-infrared optical parameter generation and visible light generation through frequency doubling.

Laser generation in the 1.2 μm band has been achieved by different solid-state lasers, including semiconductor lasers, diamond Raman lasers, and fiber lasers. Among these three types, fiber lasers are an excellent choice for generating 1.2 μm band lasers due to their simple structure, good beam quality, and flexible operation.

Researchers led by Professor Pu Zhou from the National University of Defense Technology in China are interested in high-power fiber lasers in the 1.2μm band. Most of the current high-power fiber lasers are ytterbium-doped fiber lasers in the 1 μm band, and the maximum output of the 1.2 μm band is limited to 10 watts.

Their research, titled "High-Power Tunable Raman Fiber Laser in the 1.2 μm Band," was published in Frontiers in Optoelectronics.

Their idea is to use the stimulated Raman scattering effect in passive optical fibers to obtain high-power laser generation in the 1.2μm band. The stimulated Raman scattering effect is a third-order nonlinear effect that converts photons to longer wavelengths.

By exploiting the stimulated Raman scattering effect in phosphorus-doped optical fiber, the researchers converted the high-power ytterbium-doped fiber in the 1 μm band to the 1.2 μm band. A Raman signal with a power of 735.8 W was obtained at 1252.7 nm, which is the highest output power ever reported for a 1.2 μm band fiber laser.

Source: Laser Network


Related Recommendations

  • In situ bubble point measurement using spectroscopy

    Develop and research a new downhole bubble point pressure measurement technology suitable for black oil and volatile oil to enhance well analysis using spectroscopy.Representative fluid characteristics are required for a wide range of oilfield lifespans, such as the initial scale and production planning of reservoir hydrocarbon reserves. Fluid characteristics are usually obtained from laboratory s...

    2024-01-31
    See translation

  • The advanced laser welding machine has been successfully debugged, helping to make a leap in high-performance battery manufacturing!

    Alexander Battery Technologies, a leading company in the field of battery manufacturing, recently announced that it has successfully debugged the world's most advanced laser welding machine, an innovative initiative that will greatly drive the company's production process.Alexander Battery Technologies, as a company dedicated to supporting original equipment manufacturers in bringing lithium-ion b...

    2024-04-28
    See translation

  • Manufacturing customized micro lenses with optical smooth surfaces using fuzzy tomography technology

    Additive manufacturing, also known as 3D printing, has completely changed many industries with its speed, flexibility, and unparalleled design freedom. However, previous attempts to manufacture high-quality optical components using additive manufacturing methods often encountered a series of obstacles. Now, researchers from the National Research Council of Canada have turned to fuzzy tomography (a...

    2024-05-30
    See translation

  • The LANL Laboratory in the United States has achieved a light source that generates a circularly polarized single photon stream using a quantum light emitter

    Los Alamos National Laboratory (LANL) has developed a method for a quantum light emitter that stacks two different atomically thin materials together to achieve a light source that produces a stream of circularly polarized single photons. These light sources can in turn be used for a variety of quantum information and communication applications.According to Los Alamos researcher Han Htoon, the wor...

    2023-09-02
    See translation

  • Trotec Lasersysteme Darmstadt Laser Cutting Technology Center opens

    Trotec Laser, a manufacturer of laser technology in Upper Austria, is opening a new laser cutting competence center. The expanded showroom in Darmstadt now also houses three new large format laser cutters from the SP series. This strategic move is designed to meet the growing demand for large format laser cutting solutions.To celebrate the reopening of the Darmstadt Competence Centre, Trotec will ...

    2023-09-06
    See translation